Cup and closure

ABSTRACT

A container and closure assembly includes a container including a bottom portion and an encircling wall extending therefrom and defining a body portion. The body portion has an open end with a span equal to or different than the span of the body portion. The assembly also includes a removable cap liner including a seal for sealably engaging the container at its open end in a manner which traps fluids in the container and a removable cap which substantially covers the cap liner and thereby the open end of the container. The cap is adapted for reclosing the container after it is removed from the container.

CROSS-REFERENCE TO RELATED APPLICATION

This application is a Division of U.S. patent application Ser. No.08/465,438, filed Jun. 5, 1995, now U.S. Pat. No. 5,661,889, which inturn is a Continuation-In-Part of U.S. patent application Ser. No.08/372,021, filed Jan. 12, 1995, now U.S. Pat. No. 5,673,807.

BACKGROUND OF THE INVENTION

This invention relates to containers and closures, and moreparticularly, to a container having a removable, fluid sealable closure,especially gas sealable, which upon removal leaves an open drinkingglass.

Typical commercial containers for holding carbonated beverages are glassbottles or metal cans having screw caps and tabs, respectively, foropening same. The caps and tabs are securely and sealably attached tothe bottles and cans, respectively, for sealing in all fluids, includinggases associated with carbonation. After removing the cap or tab,drinking the contents of the container is cumbersome, often unhygienic,preferably requiring a separate glass or cup. Such opened cans andbottles are typically usable only for recycling, unless altogetherdiscarded.

Primary design features of commercial containers which makes theminconvenient and unaesthetic from which to drink, and even less forcontinued home use, are the threaded small opening, as with a bottle, orthe even smaller opening given by the tab, which may have gathered dirt,as with a can. With these types of closures, consumers of the beveragesare inconvenienced, nor do they have any incentive to keep thecontainers for re-use. Accordingly, common shortcomings of commercialcontainers lie in their shape and in the closures typically used forthem.

Existing bottles, whether made of glass or plastic, must have a smallopening from which to dispense, if they are to retain pressure, becauseclosures for large openings, such as for a drinking glass, cannot beafforded, and would be very cumbersome to remove, even if they existed.

Plastic containers are generally preferred by the public. It is,therefore, desirable to provide a plastic container with a wide enoughopening from which to drink, necessitating a coresponding closure.

U.S. Pat. No. 5,325,976 to Valyi et al. discloses such a closureassembly that is economically acceptable and wherein threads or tabs arenot used. The assembly includes a plastic container, a barrier and overit a closure member. The barrier and the closure member completely coverthe access opening to the container and the barrier includes a weakenedportion which is broken by action of the closure member, wherebysubstantially all of the barrier is removable from the full opening ofthe container. Accordingly, the container closure assembly includes aseal which does not use threads nor tabs and is protected fromcontamination. The container disclosed in the patent may be a typical,narrow-neck bottle used for carbonated and other beverages such as sodaand juice, or a wide-mouth container.

There exists a need in the container art for a container, particularlyone made of plastic, in the form of an aesthetically pleasing drinkingglass or the like and a closure therefore that is fluid, especially gassealable over a wide opening, readily removable and hygienic, as forexample the one disclosed in the foregoing patent.

SUMMARY OF THE INVENTION

The primary object of this invention is to provide a user friendly,aesthetically pleasing container and closure assembly, preferably madeof plastic, wherein beverages, including carbonated beverages, can bestored and from which the said beverages can be conveniently consumed.

Another object of this invention is to provide a reclosable containerand closure assembly, including one that retains carbonation until firstopened.

Another object of this invention is to provide a container and closureassembly wherein the closure sealably closes the container formaintaining carbonation, if required, while the container has the shapeof a drinking glass or cup having a rim adapted for convenient use.

Still another object of this invention is to provide a container andclosure assembly wherein advertisement or the like can be placed on theclosure so as to minimize the cost of decorating the container itself.

Still other object of this invention is to provide a method for theproduction of said container and closure assembly from plasticmaterials, at reasonable cost.

The above objects and more are achieved by the container and closureassembly of the present invention. The assembly comprises a containerincluding a bottom portion and an encircling wall extending therefromand defining a body portion. The body portion has a wide, cup-like openend with a span equal to or different than the span of the body portion,as for example, greater than the span of parts of the body portion. Theassembly also includes a closure composed of a removable cap linercarrying means for engaging the container at its open end to close thecontainer in a manner which retains fluids in the container, especiallygases, and a removable cap over the cap liner and thereby over the openend of the container. The cap and liner are adapted for reclosing thecontainer after removal.

In one embodiment of the invention, the container and either the cap orthe cap liner may be formed from the same molded piece; the container isa drinking glass; and the container includes a lip portion located atthe open end made convenient for drinking, in engagement with theportion of the cap liner remaining attached to said lip portion uponopening of the container.

In a preferred embodiment, the container and a closure are formed fromthe same molded piece and the closure comprises a cap liner with aseparately molded cap placed over the cap liner.

A process for producing the container and closure of the presentinvention includes the steps of molding a preliminary container, as anoriented preliminary container, including a closed bottom portion end, abody portion and a shoulder and neck portion; separating the shoulderand neck portion from the body portion of the preliminary container;forming an open ended second container from the body portion, the secondcontainer having an encircling wall with an inner and outer surface;forming a closure from the shoulder and neck portion; and attaching theclosure to the second container, wherein the closure is fitted over thesecond container at its open end to close said second container. In apreferred embodiment, the closure comprises a cap liner and the processincludes the step of placing a cap over the cap liner. In an additionalembodiment of the present invention, a cap is formed from the shoulderand neck portion, including the steps of providing a cap liner andattaching the cap liner to the second container, wherein the cap linerengages the second container at its open end to close said secondcontainer, and placing a cap over the cap liner.

In accordance with the present invention, the cap liner sealably engagesthe second container at its open end in a manner which retains fluids inthe second container.

In one embodiment, the second container includes an outwardly extendingflange shaped into a sealing configuration with the cap liner.

In a further embodiment, the present invention comprises: a containerincluding a bottom portion and an encircling wall extending therefromand defining a body portion, wherein the body portion has an open enddefined by a rim; a removable cap liner including means for sealablyengaging the container at its open end in a manner which retains fluidsin the container; and a removable cap over the cap liner and therebyover the open end of the container including means to break the capliner and open the container upon movement of the cap; a plurality ofpressure-release vents in the cap liner and means for closing the ventsin the cap; whereby, pressure is released from the pressure-releasevents upon moving the cap followed by breaking the cap liner uponcontinued movement of the cap.

The details of the present invention are set out in the followingdescription and drawings wherein like reference characters depict likeelements.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a cross-sectional view of the container and closure assemblyshowing the cap, cap liner and drinking glass shaped portion (at timeshereafter termed "glass") in accordance with the principles of thepresent invention.

FIG. 1A is an enlarged cross-sectional view of a portion of thecontainer closure assembly of FIG. 1.

FIG. 2 is a top view of the assembly shown in FIG. 1.

FIG. 3 is a schematic view of the process for manufacturing the elementscomprising the present invention.

FIG. 4 is a schematic view of the process for further manufacturing andassembling the elements comprising the present invention.

FIG. 5 is an elevational view of the container and closure assembly ofthe instant invention.

FIG. 6 is a partial sectional view of a preferred embodiment of thepresent invention.

FIGS. 7 and 8 are schematic views similar to FIGS. 3 and 4 showing apreferred embodiment for manufacturing and assembling elementscomprising the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT

Referring now to the drawings in detail, there is shown in FIG. 1 across sectional and elevational view of the container and closure of thepresent invention designated generally as 10. Container and closure 10comprises a container portion 12, a cap liner 14 and a cap 16, allpreferably formed from polyethylene terephthalate (PET). The PET may betransparent, opaque or tinted, whichever is desirable.

Container portion 12 is essentially in the form of a drinking glass orcup typically used for single servings in homes, outdoors, inrestaurants and bars. Container portion or drinking glass 12 maydesirably have a straight side wall or a shape which diverges outwardlyor inwardly from base 18 to an open end 20, although naturally othershapes can be used. Accordingly, container portion 12 has any desirableshape convenient to grasp and for drinking, and may include moldedsurface features or decorations such as dimples of swirls on the outersurface 22 of container portion 12.

Adjacent open end 20, container portion 12 may include a formed ring 24bearing against cap liner and acting as an elastic sealing elementtherein that is urged against the liner 14 by pressure, as bycarbonation, within container 12. Ring 24, if used, is formed in acutting and folding process, discussed below. Downward leg 14A may ifdesired have a circumferential recess used to engage a snap ring of cap16 such that cap 16 may be removably but securely fastened to the outersurface 26 of cap liner 14. Container portion 12 preferably has a volumeto carry a single serving of liquid such as for example, soda, seltzeror beer, or non-carbonated liquids such as juice, or any other beverage.

Cap liner 14 is the element which seals container 12 as above, or bymeans of a seal as described in U.S. Pat. No. 5,325,976, or by any otherknown sealing means, which is particularly important when a carbonatedbeverage is being stored in container 12 for a substantially long periodof time so as to maintain the desired amount of carbonation.

The container closure assembly disclosed in U.S. Pat. No. 5,325,976(hereinafter referred to as Valyi et al. '976), issued Jul. 5, 1994, ishereby incorporated into this application, wherein the closure memberdescribed in detail therein may be used with the present invention.

Based on the design disclosed in Valyi et al. '976, container 12 may ifdesired also include a recess in outer surface 22 extending therearoundfor engagement with a snap ring of the cap 16. Cap 16 may be removedfrom container 12 by snap ring 27 being caused to disengage from or snapout of recess 23, as described in detail in the incorporated patent. Asan alternative, container 12 could include a projection or recess forengagement with a corresponding projection or recess provided in theclosure member as shown in Valyi et al. '976. It is noted that Valyi etal. '976 shows a cap liner attached to the container by adhesion orwelding, in place of the ring 24 acting as a sealing element, whereinthe ring acting as a sealing element as shown herein is preferred.

The cap liner 14 has a stepped circular configuration such that theupper surface 34 thereof includes an extension 30. Extension 30 ispreferably raised from upper surface 34, in the form of a multi-sidedgeometric shape, preferably hexagonal, similar to a nut fastener, shownin the top view of FIG. 2. Extension 30 is adapted to be engaged by arecess 36 of cap 16. Cap liner 14 also includes a weakened portion 25 inthe lower circular surface 32 thereof. Alternatively, the multi-sidedelement in the cap liner can be a depression adapted to be engaged bythe cap as shown in FIG. 5 of Valyi et al. '976.

Cap 16, which engages and substantially covers liner 14, is used totwist liner 14 and break weakened portion 25 provided by cap liner 14,so as to expose the contents of container 12. Cap 16 is essentially acup shaped member having a top end 37 with an opening or inner surfacetherein defined by recess 36, and a skirt 40, extending from top 37defining an open bottom 38. Skirt 40 is adapted to extend over cap liner14 and if desired engage the bottom end thereof as via a locking cam 42,which extends around the circumference of cap 16, adjacent the bottomedge thereof. Skirt 40 is of a length which may extend over asubstantial portion of the body of the container 12 in assembly 10,sufficient to apply a printed decoration thereon, for example,approximately up to one third the length of the assembly 10.

Cap 16 is adapted to be placed over and onto cap liner 14 for engagingextension 30. Cap 16 together with liner 14 can be used for reclosingcontainer portion 12 after opening, wherein locking cam 42 may ifdesired be provided so as to engage outer surface 23. The reclosingseal, however, need not be sufficient to withstand full carbonationpressure. Skirt 40 extends from cap 16 and is preferably of a size tohold a large insignia or other decoration, preferably by which thebeverage is identified. Liner 14 may also carry a logo or decoration,and be colored, with cap 16 made from a transparent material.

Cap 16 includes wrench key recess 36 within end 37 in the shape of butslightly larger than extension 30, as shown in FIG. 2. Wrench key recess36 securely engages extension 30 such that upon twisting of cap 16,weakened portion 25 is caused to break, freeing the contents ofcontainer 12, as described in the incorporated patent.

In using the container and closure 10, cap liner 14 may be attached tothe container portion 12 as shown in FIG. 1 and/or substantially asdescribed in the incorporated U.S. Patent, Valyi et al. '976. Aftercontainer 12 is filled with the beverage and cap liner 14 installed, cap16 is placed over cap liner 14. Cap 16 snaps over outer surface 23 suchthat it is securely but removably attached to container 12.

Upon twisting cap 16, the relatively weaker portion 25 of liner 14located adjacent the inner surface of the ring 24 of container 12,shears due to the torque transmitted from wrench key recess 36 of cap 16to extension 30 of liner 14. This process functions to open the entiretop of container 12, and may also if desired serve to decompress thecontents and to actuate a tampering indicator, which may be weak portion25 itself.

Naturally, internal pressure against that portion of the liner which isintended to be removed may reach a force in excess of that which aperson opening the container may hold. Therefore, it is necessary torelease said pressure before fully fracturing the weakened portion. Thismay be accomplished by the arrangement of vent passages 43 in liner 14as shown in FIGS. 1A and 2.

Thus, as weakened portion 25 is broken, the full pressure (up to severalhundred pounds) acts against the liner 14 without anything holding it tokeep it from being forcefully propelled away. In order to preclude this,venting of the pressure is provided before portion 25 is broken. Forexample, as shown in FIGS. 1A and 2, a series of small holes or vents 43are arranged circumferentially alongside extension 30, and a series ofmatching plugs 43A is juxtaposed said holes as part of cap 16. The holesare kept closed due to sealing action of plugs 43A. Wrench key recess ismade slightly larger than to match extension 30 with small space 44being provided therebetween so that no torque is transmitted until aninitial twisting movement will have been imparted to cap 16. Thedifference in dimensions is designed to be sufficient to allow fortwisting cap 16 to release plugs 43A from holes 43, but not enough tothereafter preclude interference and thus transmittal of torque toweakened sections 25. Accordingly, upon initial twisting, pressure isreleased as shown by arrows A and B in FIG. 1A, and upon continuedtwisting, the weakened section 25 is broken as described above.

The preferred process for forming the container and closure 10 is asfollows and as shown in FIGS. 3 and 4. Referring now to FIGS. 1 and 3,container portion 12 and cap 16 and/or cap liner 14 are formed from asingle, unitary preliminary container. Initially, a preform 50 ispressure molded. The preform is then stretch blow molded in step S1 intoa preliminary container 52 as shown in FIG. 3, preferably having afolded, transversely extending, hollow flange 54 extending outwardlyfrom preliminary container 52. The blow molding operation is preferablya stretch blow molding technique similar to that used for forming tennisball cans in U.S. Pat. No. 4,576,843. The patent describes a tennis ballcan blowing process which acquires full orientation of the containerportions including the rim, for the purpose of rendering said rimformable in its solid state, as required when applying a can-end to saidcan by double seaming.

In step S2, lower body portion 58 is severed from upper shoulder andneck portion 56 through flange 54. The severing can be accomplished byany convenient means, as via a laser, a high pressure fluid jet, or witha hot knife or wire. The severing of the precontainer in formingcontainer portion 12 is significant, since thereby brittleness in therim section of container portion 12 is avoided, the rim section havingacquired full orientation the same as the rest of the blow moldedprecontainer.

Unlike the tennis ball can process described in the above mentioned '843patent, however, upper shoulder and neck portion 56 of preliminarycontainer 52 is not discarded. Rather, in the instant invention, the cutoff upper shoulder and neck portion 56 is used to form cap 16, asdiscussed below.

The rim section must remain formable, as in the case of the tennis ballcan of the '843 patent, in order to perform the subsequent forming ofthe rim of container portion 12 into ring 24, to extend from the opentop end of lower body portion 58 described above and to which liner 14and cap 16 may be later applied (see FIG. 1).

Instead of this procedure, which is preferred, any other rim formationmay be employed, so long as it is able to receive the closure accordingto the present invention, as shown in the Valyi et al. '976 patent.Alternate means of attachment, mentioned therein, such as heat sealingor welding, may then be employed, including means that require noforming of the container rim, permitting the container to be made byinjection molding or direct injection blow molding, as is well known.However, the sealing procedure according to FIG. 1 herein is preferredbecause of the resulting simplicity of applying the closure to thecontainer and the avoidance of sealants and the like.

Since folding requires that flange 54 be heated, the operation offolding may be combined in step S3 with crystallizing, if desired, usinga heated tool 32 consisting of a mandrel 32A and a forming collar 32Bwith which to shape flange 54, both of which may be heated therebyshaping flange 54 and forming a crystallized container portion 12 asdescribed above. Thus, lower body portion 58 is forwarded to tool 32,wherein flange 54 is formed into the shape shown in FIG. 1, thusfinishing container 12. In addition, lower body portion 58 iscrystallized in step S3 while preserving full orientation with highcrystallinity throughout, including base or bottom 18. Because of itsopen top configuration, body portion 58 and its bottom 59 are thuscrystallized in a simplified process, since a heated mandrel may thus beeasily inserted to prevent shrinkage while preserving orientation duringheating. Accordingly, the original dimensions are preserved withoutreblowing.

Referring still to FIG. 3, and regarding the formation of cap 16, instep S4 the cut off upper shoulder and neck portion 56 of preliminarycontainer 52 is heated to a molding temperature. In step S5, the heatedupper shoulder and neck portion 56 is reformed into cap 16, as bycompression molding. Locking cam 42 may if desired be formed on cap 16in the same operation. The top 37 of the upper shoulder and neck portion56 of preliminary container 52 may be shaped to conform to wrench keyrecess 36 which may also have been injection molded as part of preform50, to engage multi-sided extension 30 extending from the top of capliner 14, as described above.

In step S6, the formed cap 16 is forwarded to decorating, where a label,logo, or other descriptive symbol is placed thereon for identifying thecontents of container 12. Cap 16 and container 12 are then forwarded toa capping process, see FIG. 4, for assembling container 12 with capliner 14 and cap 16.

If cap 16 is produced as above, the cap liner 14 is injection molded instep S7 into the shape shown in FIG. 1. Further information regardingthe cap liner 14 is found in the incorporated patent '976 to Valyi etal. The finished cap liner 14 is moved to an assembly station forattachment to cap 16 and/or container 12 after filling same.

The final steps of the process include the filling and capping ofcontainer 12 and are shown in FIG. 4. At this juncture, container 12 isfilled with a liquid in step S8. In step S9, container 12, cap liner 14and cap 16 are forwarded to a two-stage capper for forming the finalcontainer and closure product 10, whereby cap 16 and cap liner 14 mayhave been pre-assembled. The first stage of the capping process appliescap liner 14 to the rim of container portion 12, preferably by snappingit into place, if the ring 24 of the configuration shown in FIG. 1 isused. Alternatively, seaming, welding, or other attachment means may beused.

After cap liner 14 is secured adjacent the rim of container 12, andunless pre-assembled, cap 16 is applied over liner 14 and container 12such that locking cam 42 of cap 16 engages the bottom edge of cap liner14 and wrench key recess 36 of cap 16 is adjacent multi-sided extension30 of cap liner 14 for subsequent engagement as described above. Thisallows for the securing of cap 16 to container 12 and for subsequentopening of container 12, respectively. The finished container andclosure product 10 is shown FIG. 5.

Naturally, if ductility and formability of the rim are not required,container 12 may also be produced by other methods well known in theart, e.g., injection molding.

In accordance with the particularly preferred embodiment of FIG. 1 shownin detail in FIG. 6, container 12 includes formed ring 24 forming therim portion of the container and including inwardly extending foldedportion 70 integrally attached to container portion 12 and engagingliner or closure 14. The inwardly extending folded portion 70 includesat least one fold 72 (although of course two or more folds may readilybe provided) terminating in a flange portion 74 running generallyparallel to the encircling wall of container 12. Liner or closure 14includes a downwardly extending portion 76 also running generallyparallel to the encircling wall of container 12 and engaging flangeportion 74. The advantage of this embodiment is that internal pressurewithin container 12 will inwardly extend flange portion 70 into tighterengagement with downwardly extending portion 76 and thereby tightly sealthe container against escape of carbonation from container 12 via therim portion 23 of container 12.

A still further embodiment of the present invention which isparticularly preferred is shown in FIGS. 7 and 8 which are similar toFIGS. 3 and 4 and schematically show the process for manufacturing andassembling the elements comprising the present invention in accordancewith this particularly preferred alternate embodiment. In accordancewith the particularly preferred alternate embodiment shown in FIGS. 7and 8, the shoulder and neck portion separated from the body portion ofthe preliminary container is formed into a closure which desirablycomprises the cap liner, and a separately molded cap is placed over thecap liner. The advantages of this alternate embodiment is that the capliner 14, which should preferably have comparable barrier properties ascontainer 12, is thereby formed from the same materials as the body ofthe container, even if said container entails a laminated, or anotherwise multi-layered structure, several of which are known to be usedfor improved fluid retention and as shown in FIG. 6 where containerincludes layers 12A and 12B.

Thus, in accordance with FIGS. 7 and 8, steps S1, S2 and S4 are the sameas in the embodiment of FIGS. 3 and 4. In accordance with step S3' ofFIG. 7, flange 54 is formed into the folded portion 70 shown in FIG. 6by tool 32' which includes inside downwardly extending flange 32C usedto form folded portion 70. However, it should be noted that the foldedportion 70 may be used with either the embodiment shown in FIGS. 7 and 8or with the embodiment shown in FIGS. 3 and 4. In addition, inaccordance with the embodiment of FIGS. 7 and 8, step S5' reforms theheated upper shoulder and neck portion 56, as by a compression mold,into liner or closure 14. As shown in FIG. 8, container body 12'including folded portion 70 is filled with a liquid in step S8' andassembled in step S9' with liner 14 and cap 16, wherein cap 16 isseparately formed, as by injection molding or thermoforming, using aless expensive material than that of the container. The resultantcontainer 10' represents a highly advantageous unit as discussedhereinbelow.

Based on the structure and process described above, container andclosure 10 has an extensive shelf life for maintaining carbonation. Suchshelf life is particularly useful in that it avoids excessivecarbonation loss in storage and in product transfer. For generallyimproved shelf life, a laminate may be used for forming the preliminarycontainer, for example, including EVOH or other well known material forenhancement of gas permeation resistance, which can be produced, forexample, by coinjection or the process according to U.S. Pat. Nos.3,955,697 and 3,929,954.

The primary advantage of this invention is that a user-friendly,aesthetically pleasing container and closure assembly is providedwherein beverages can be sealably stored, especially carbonatedbeverages. Another advantage of this invention is that a container andclosure assembly is provided which may be used for wide openings and mayuse a barrier layer for sealing the container. Yet another advantage ofthis invention is that a container and closure assembly is providedwherein the closure sealably closes the container for maintainingpressure therein, as due to carbonation while the container is a typicaldrinking glass or cup-shaped container. Still another advantage of thisinvention is that a container and closure assembly is provided whereindecorations, including advertisements or the like can be placed on theclosure assembly so as to leave the container itself free of suchdecorations or to reduce the cost thereof. A further advantage is thatventing of gas can be easily accommodated before opening the container.

It is apparent that there has been provided in accordance with thisinvention a drinking glass or cup shaped container and closure whichfully satisfies the objects, means, and advantages set forthhereinbefore. While the invention has been described in combination withspecific embodiments thereof, it is evident that many alternatives,modifications, and variations will be apparent to those skilled in theart in light of the foregoing description. Accordingly, it is intendedto embrace all such alternatives, modifications, and variations as fallwithin the spirit and broad scope of the appended claims.

What is claimed is:
 1. A container and closure assembly comprising:acontainer including a bottom portion and an encircling wall extendingtherefrom and defining a body portion, wherein the body portion has anopen end defined by a rim; a removable closure including a removable capliner extending over said open end of said container and a removable capover and surrounding the cap liner for sealably engaging the containerat its open end in a manner which retains fluids in the container; afolded portion integral with said rim and engaging said cap liner,wherein the cap liner extends completely over said folded portion,whereby internal pressure in said container causes the folded portion tofirmly engage said closure due to deformation of said folded portion. 2.A container and closure assembly according to claim 1, said cap having askirt which extends over a portion of said body portion and wherein thecap and liner are adapted for reclosing the container after removal fromthe container.
 3. A container and closure assembly according to claim 2,wherein said folded portion includes at least one fold terminating in anelastically deformable portion at the rim of said encircling wall, andwherein said cap liner includes a portion thereof running generallyparallel to said encircling wall engaging and retaining the foldedportion.
 4. A container and closure assembly according to claim 1,wherein said cap liner extends completely over said container opening.5. A container and closure assembly according to claim 1, wherein saidcap liner has a stepped configuration.
 6. A container and closureassembly according to claim 1, wherein said cap engages the cap linerand said cap liner includes a weakened portion adapted to be broken bytwisting the cap liner with the cap.
 7. A container and closure assemblyaccording to claim 1, wherein a portion of the cap liner is attached tosaid container.
 8. A container and closure assembly according to claim1, including vent passages in the liner.
 9. A container and closureassembly according to claim 8, including plugs on said cap which closesaid vent passages, wherein twisting the cap releases the plugs fromsaid vent passages.